Lighting-fixture.



Patented Now 12, 1918.

A TTORNEY.

CHARLES R. HARDY, OF WILKINSBURG, PENNSYLVANIA.

LIGHTING-FIXTURE.

Specification of Letters Patent.

Patented Nov. 12, 1918.

Application filed January 26, 1917. Serial No. 144,644.

To all whom it may concern Be it known that I, CHARLES R. HARDY, a citizen of the United States of America, residing at Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Lighting-Fixtures, of which the following is a specification.

The present invention relates to lighting fixtures, and more particularly to that type of fixtures known as drop lights and capable of being lowered and raised with relation to the point of support, and is designed to replace the ordinary gas or electric light table lamp and its accompanying cord containing the flexible gas tube or electric wires. My lighting fixture can be conveniently attached to a chandelier or directly connected to a ceiling support as will be explained hereinafter in this specification. i I

. My invention has a valuable feature in shown one complete example of the physical embodiment of my invention constructed according to the'best mode I have so far devised for the practical application of the principles of my invention.

Figure 1 is a front view of my invention.

Fig. 2 is a vertical central sectional view taken from the right'of Fig. 1.

Fig. 3 is across-sectional view taken on line 3'3 of Fig. 1.

*Fig. 4 is an enlarged partial section showing the interior construction of a portion of Fig. 3, and taken on line 44 of Fig. 1. Fig. 5 is a cross sectional view on line 5--5 of Fig. 4, of a portion of the device.

Fig. 6 is an end view taken on line 66 of Fig. 4.

Fig. 7 is a front view of one of the washers used with my device.

Fig. 8 is a cross section'al view taken on line 8-8 of Fig.1.-

Fig. 9 is a side view of a joint of my invention partly in section and taken looking in the direction of the arrows of line 99 of Fig. 1.

Fig. 10 is a cross-sectional view of a part of the device taken on line 10-10 of Fig. 9.

The numeral 1 is a casting having a threaded end 2 and a central interior duct or passage 3, with a branch assage 4, and another branch passage 5. assages 4 and 5 are separated one from the other by a division wall 6. Passage 5 has an aperture 7 which communicates with the outside as shown in F ig, 8. It will be noted that I have shown the threaded end 8 dotted and same is for attachment of the casting 1 under conditions where the supply line is from a point overhead, as in the ceiling of a room in a building, while the end 2 -is suitable for attachment to a side wall or a side connection to a chandelier or a like support.

Two meshing arc gear castings 9,10 having projections 11, 12 like a frustum of a cone in shape are adapted to rotate in sockets 13, 14 formed therefor in the casting 1. The arc gear castings 9, 10 have central passages 15, 16 which communicate with passages 4 and 5 of casting 1 and with passages 17, 18. The left side of the device 19 is for use as a gas supply line to point 21, while the right side 20 is for the wires leading to the electric light socket 22, but the uses of each may be reversed if the construction of the parts is correspondingly changed. In the part 11, a circumferential slot or groove 23 and an entrance duct 24 keeps passage 4 in constant communication with aperture 17 when 11 is revolved in socket 13 as is readily understood. In the part 12 half of the material as seen in the similar cross-section in Fig. 5, is cut away at 25 in order that the leading-in wires 26 may have space in which to reside when the part 12 is rotated in its socket 14.

Following the gas side 19 of the fixture, 27 is a pipe screwthreaded into arc gear casting 9, and also into a casting 28 of ordinary construction in the art, and a casting 29 also of usual construction is adapted to rotate in casting 28, and communicating passages which are continuously open lead therethrough from aperture 17, through pipe 27, castings 28, 29 into pipe 30. The pipe 30 is threaded into casting 29, and also threaded into arc gear casting 31. The casting 32 is very similar in construction to the supporting casting'l before described, and has a passage 33 which is in communication with the interior duct of pipe 34, the latter being screwthreaded into casting 32, as shown, and gas is intended to be conveyed from'pipe 30 through casting 32 by meansof ducts 35, 36' into pipe 34. It will be noted that-"passages 35, 36 are continuously in communicationwith each other in similar fashion to the construction indicated by 11 and duets 4 and 24 asis shown in Figs. 2 and 3. The casting 32 also has aduct 37 which communicates with Y passage 38 of the arc gear casting 39, and

of control. 52,,and-attachment means 53 for a gas-burner (not shown) is fastened onthe: end of-pipe50, and thereby the gas is led aperture 40 of same. The section shown in Fig, 5 illustrates that the portion 25 of the part 41,being cut away as indicated, enables the part 41to-be rota-ted iii-socket 42, of the casting 32, and the electric wires 26- may a. casting 48, and is screwthreadedinto same as shown,and.-into 32 as before stated. The casting 48- has a passage 49 therein whichleads to the; bore .of thepip'e 50 I attached to said casting. The usual va-lvc51 and means fromthe .point of entrance '54 in casting 1 to point 21 and to the burner. It is: observed;

alsothat .themovement of'any of the afore' said j ointsdoesnot interfere with the-cont1nuous flow of gas in any way, the only; point of control. between points 54 and 21 being part 52 and valve 51. I

- With reference tothe-eleetric sideofithe device 20, I have shown above that wires canbe admitted to passage 5 through aperture- 7, andtherefrom to and through passage 16, and aperture 18. A pipe 55 isscrewthreaded: into the arcgear casting 10,;and into cast ing 56, and through which. the le'adi Wires26 from aperture 18, are led toand through a casting'57, and into pipe-58 as will be described- The casting; 57 has a passage 59,

' positioned centrally thereof see Figs. 9, 10,

and also a circumferential groove. 60. The

passage 59 leadsthrough aperturev 61 into:

grooveGO, as shown. The casting 56 has a passage 62 which registers with the groove,

- andthepassagein'theipipe55. It is seen from the, aforesaid figures-thatthe electric wires may be" led: from 55, through 62,.

around: the groove/60, into aperture; 61,. and thence-through 59: intopipe. 58. It is fur;-

' ther seen that any'rotation; of castingy'57 in its socketf63, Will merelytend to push wires 26 backward or forward in, pipe 5.5;,and the interior bore 64, of said pipe is made of sufficient diameter to permit of the slight accumulation of wireandaccommodate the partial rotation of casting 57 in socket 63, as Will be further explained. The rotation of 57 in 63 I have illustrated in Fig. 10, in which 26, 65 66, 67, 68 indicate the wires-26 in one position, when the device as a Whole is in raised position shown by the full lines in Figs. 1, 2, while 69,- 66, 67, 70,.indicate the wires when the fixture is in the lowered position, or that shown by the dotted lines in Fig. 1. It is seen that the effect of lowering the device is merely to shorten the portion 65 of wire 26 shown in Fig. 10, the surplus of wire merely accumulating in pipe 55, as is readily appreciated- As before stated the wires having been advanced to and Within the pipe 58, are led through casting. 32 as explained above. in. connection with the description of saidscasting, and through the apertures 44 into the bore 46 of pipe 47, thenceinto the passagc7l in casting 48, and to the electric light socket 22., For convenience the electric lightpwhich is, attached to socket 22 is not shown. It will be noted that thepipe 47 is heldi'n. position by casting 48, and restsupon the'top of same asshown clearly in Fig.- 2'. 1

In Figs. 6 and 7, I have shown the end ofpart 41 as having anflattened; side' 72,, and a washer-73 having a complementary aperture and; adapted tobe placed thereon, so that when part 41- is rotated; in socket 42, the frictional surfaces where'therotationtakes place,

occurs between the; washer 73, and the end74 of part 41', otherwise the: small screw 7.5

would be, displaced by said rotation The:

samev means are usedi onthe ends, 76, 77,. 78-, 7.9, 80, 81- and for the samepurposen Theteeth of the arc gear castings 91nd:

IO-mesh with each other, and'likewise the same is true of the teeth of, castings-31 and 39, and the purpose of these inter-meshing gears-9, 10, 31'and 39 is to enable the portion 82 carrying the electric light and the gas burner, to be raised and, lowered inv a truly vertical line, readily and smoothly, it having been found from. experiment to accomplish this desirable result.

The fixture can beused wholly for gas instead of the combination.fixture above described, in which case both branches 19, and 20, can be joined in so far astheir interior passages are concerned and used for conveyingthe gas, the site'20 being made a counter part of the side 19', small modifications beingintroduced as'is readily seentoaccomplish this purpose. The device can alsobe' used as an electric light fixture Where; gas is not desired. I have shown a portion'83, of theteeth of each of the arc gears filled in or uncut, the purpose being to restrict the finaladjusting movement of the fixture vertically, at both its uppermost and lowerion most positions. It is also to be noted that the operation of the device in a truly vertical line as before stated, prevents any angular or bending strains being set up on the stem of a chandelier to which the device may be attached, same being as is readily appreciated a very desirable feature of my invention.

What I claim is 1. In a combination gas and electric light fixture, a supporting casting comprising a centrally positioned portion having a pair of gas and electric wire ducts therethrough, an interior division wall formed in said casting, separating the said ducts from each other, a junction casting having a pair of gas and electric wire ducts therein, an interior division wall separating the said latter ducts, a hollow external boss formed on the side of said junction casting accommodating the said electric wires, adjustable means provided with independent passages therethrough connecting the respective gas and wire ducts in the supporting and junction castings, and means for preventing injury to the electric wires in said connecting means, when the latter is adjusted in various operable positions.

2. In a combination fixture for gas and electric light, a supporting casting having a pair of gas and electric wire ducts pass ing therethrough, an interior division wall between said ducts, formed in the said casting, a junction casting having a pair of gas and electric wire ducts therethrough, an interior division wall in the latter casting separating the ducts in the same, adjustable connecting means provided with independent passages therethrough communicating with the respective gas and wire ducts in the supporting and junction castings, an inner gas conveying pipe attached to the junction casting, an outer conduit for the electric wires surrounding the inner pipe, an abutment casting rigidly mounted on the lower end of the inner pipe, provided with passages for independently carrying the gas, and electric wires therethrough to the respective light sources.

In testimony whereof I aiiix my signature in the presence of two witnesses.

CHARLES R. HARDY.

Witnesses:

HUGH J. DUFFY, EARL A. CARPENTER.

Copies of thin patent may be obtained for five cents each, by addressing the Commissioner 0! Patents, Washington, D. 0'. 

